WASHINGTON -(Dow Jones)- U.S. Rep. Mike Ross, D-Ark., a leader of fiscally conservative House Democrats, said Wednesday a House plan to overhaul the U.S. health-care system is losing support and will be stuck in committee without changes.

"Last time I checked, it takes seven Democrats to stop a bill in the Energy and Commerce Committee," Ross told reporters after a House vote. "We had seven against it last Friday; we have 10 today."

Three House committees are slated to begin considering the $1 trillion-plus bill this week, but the Energy and Commerce looms as the biggest challenge. That's because it counts among its 36 Democratic members seven members of the Blue Dog Coalition, a fiscally conservative bloc that is opposing the House Democrats' effort.